CN106382098B - A kind of rotary teeth - Google Patents
A kind of rotary teeth Download PDFInfo
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- CN106382098B CN106382098B CN201611049889.8A CN201611049889A CN106382098B CN 106382098 B CN106382098 B CN 106382098B CN 201611049889 A CN201611049889 A CN 201611049889A CN 106382098 B CN106382098 B CN 106382098B
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- rotary teeth
- cutting
- teeth
- rock
- cutting face
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/42—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits
- E21B10/43—Rotary drag type drill bits with teeth, blades or like cutting elements, e.g. fork-type bits, fish tail bits characterised by the arrangement of teeth or other cutting elements
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/54—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits
- E21B10/55—Drill bits characterised by wear resisting parts, e.g. diamond inserts the bit being of the rotary drag type, e.g. fork-type bits with preformed cutting elements
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of rotary teeth, belong to the drilling equipment technical fields such as petroleum gas, mine engineering, building foundation engineering construction, geology, the hydrology, including cutting element and rotating seat, the geometric center in the preceding cutting face of the cutting element of rotary teeth or the preceding cutting face of cutting element rotates against the rotational axis offset of the rotating seat of tooth, and the cutting element of rotary teeth rear cutting face or cutting element rear cutting face geometric center preceding cutting face offset side's homonymy, the preceding cutting face of cutting element relatively after cutting face close to rotating seat rotation axis.The present invention solves that on existing drilling tool or rock crushing tool composite teeth can not be used（Such as PDC teeth）Or the fragile service life of composite teeth it is short the problem of, while it uses the cutting tooth consistent with the prior art（Such as hard-metal insert）When, the abrasion of cutting tooth and abrasion passivation speed are also more preferable.
Description
Technical field
The invention belongs to the drilling equipment skills such as petroleum gas, mine engineering, building foundation engineering construction, geology, the hydrology
Art field, more particularly to a kind of rotary teeth.
Background technology
Cutting tooth is used in rock crushing tool, the element of fractured rock or addi-tional crusher rock such as on drill bit drilling tool,
Cutting tooth and the interaction mode of rock determine the work efficiency of cutting tooth fractured rock, and also determine cutting tooth uses the longevity
Life.Drill bit is to direct fractured rock, the rock crushing tool of formation pit shaft in drilling engineering.Now used in drilling engineering
Drill bit mainly has rock bit and PDC（Composite polycrystal-diamond）Drill bit.Gear wheel in rock bit by bearing arrangement with
Bit body forms rotation connection, during bit operation, bit body rotation drive gear wheel around drill axis rotate while, gear wheel can also
Rotated around the axis of itself, the cutting tooth on gear wheel makees the compound motion of complexity, rotary drill under the synthesis that above two is moved
Head belongs to on-fixed step cutting structure bit.Cutting tooth on PDC drill bit is fixed on bit body, and cutting tooth is opposite with bit body solid
It is fixed, PDC drill bit category stationary cutting structure drill bit.
During gear wheel cutter breaking rock, cutting tooth is constantly changing with respect to the action direction of rock, some cutting tooths
Relatively even rock can be changed to counter motion；Gear wheel does not depart from shaft bottom all the time with the cutting tooth on bottom rock perseverance contact zone,
Its effect with respect to rock（Scrape and cut）Direction constantly changes between 0~360 °.This makes on gear wheel can not be directly using being extremely suitable for
In to scrape the composite polycrystal-diamond of butt formula broken rock（PDC teeth）The extremely strong diamond class cutting tooth of uniform wearability.Reason exists
Be made of in PDC teeth matrix and polycrystalline diamond layer two parts, rock is risen it is main scrape that cut effect is polycrystalline diamond layer,
PDC teeth, which are scraped, has directionality when cut is made, can only be polycrystalline diamond layer in preceding matrix rear.If PDC teeth are in the course of work
Middle Impact direction amplitude of variation is excessive, or is subject to opposition, it is easy to causes bursting apart for polycrystalline diamond layer, serious drop
The working life of low PDC teeth, or even make the damage failure of PDC teeth within the extremely short time.
Either rock bit or PDC drill bit, during the drilling broken rock of the shaft bottom of km depth, drill bit can be sent out for it
The compound movements such as raw vibration, pendulum rotation, or drill bit, in compound drilling, cutting tooth complicated movement, cutting tooth is cut with respect to scraping for rock
Direction change is big and change is frequent.Movement of the drill bit with respect to shaft bottom complexity makes cutting tooth thereon be difficult to set direction or side
The opposite rock movement fractured rock in position.Opposite broken rock direction can inevitably occur in the cutting tooth course of work on well drilling and rock crushing tool
Or the situation that orientation changes, even it is being constantly changing all the time.When cutting tooth is with rock interaction broken rock, it is with respect to rock
It is to cause cutting tooth that broken rock direction or orientation, which constantly change,（Particularly to scrape the cutting tooth of butt formula broken rock）The main original of damage
One of because.
The content of the invention
It is an object of the invention to：A kind of rotary teeth is provided, composite teeth can not be used by solving the cutting tooth of the prior art（Example
Such as PDC teeth）The problem of, even if while its using the cutting tooth consistent with the prior art（Such as hard-metal insert）When, cutting tooth
Abrasion and abrasion passivation speed are also more preferable.
The object of the invention is realized by following technical proposals：
A kind of rotary teeth, including cutting element and rotating seat, the preceding cutting face of the cutting element of rotary teeth or cutting element
Preceding cutting face geometric center rotate against tooth rotating seat rotational axis offset, and cut after the cutting element of rotary teeth
The geometric center in the rear cutting face of bevel or cutting element is in offset side's homonymy in preceding cutting face, the preceding cutting face phase of cutting element
Rotation axis to rear cutting face close to rotating seat.
Preceding cutting face described in this patent（It is referred to as rake face）When referring to that cutting tooth works Rock Cutting, cut
The surface that chip is flowed out along it.Then cutting face（It is referred to as rear knife face）Then refer to the cutting tooth surface opposite with rock,
Cutting face is usually to face cutting depth afterwards（Direction of feed）Face.Typically, the intersection in preceding cutting face and rear cutting face
Cutting edge is formed, it serves as main cutwork.
For conventional hard-metal insert, it is combined by matrix and the wearing layer being consolidated on matrix compound
Tooth, its preceding cutting face are the front end face of wearing layer, and then cutting face is then the side of wearing layer and/or matrix.So-called wearing layer
It is that its wearability is stronger, for composite polycrystal-diamond or polycrystal diamond composite teeth or glomerocryst Buddha's warrior attendant for opposite matrix
For the composite teeth that stone is mutually combined with impregnated diamond, its wearing layer is polycrystalline diamond layer, and matrix is then hard conjunction
Golden or impregnated diamond etc., matrix be in wearing layer rear portion push away hold the front end face that support wearing layer it is preceding progress broken rock work
Make.
Therefore, this patent is mainly wanted to protect a kind of rotary teeth, including cutting element and rotating seat, and cutting element has wear-resisting
Layer and matrix, and using the geometric center of the front end face of wearing layer as critical point, the cutting element of rotary teeth is overall or several including this
The major part at what center rotates against the rotational axis offset of the rotating seat of tooth, and the front end face of wearing layer is with respect to the close rotation of matrix
Turn the rotation axis of the rotating seat of tooth.
It should be further understood that the rotary teeth of this patent can also be applied to hard-metal insert, cubic boron or impregnated diamond
Tooth（Block）Deng tooth, rotary teeth just point without wearing layer and matrix at this time.
It is mutually compound for composite polycrystal-diamond or polycrystal diamond composite teeth or polycrystalline diamond and impregnated diamond
For the composite teeth formed, its wearing layer is polycrystalline diamond layer, and matrix is then hard alloy or impregnated diamond etc., at this time
The front end face of polycrystalline diamond layer is then preceding cutting face, and according to the difference of its front end face shape, preceding cutting face can be plane（Example
Such as most common regular cylindrical body PDC teeth, the front end face of its polycrystalline diamond layer is a circular flat）, curved surface（Such as diamond
Layer forms the front end face of a taper, hemispherical or ridge-shaped/wedge shape etc. on matrix）Or the various surfaces such as shaped face.Likewise,
Cutting face can be cylindrical surface according to diamond layer or the difference of matrix side view afterwards（Such as common regular cylindrical body PDC
Tooth, the side of its polycrystalline diamond layer is cylindrical surface）Or other cylinders or plane etc..
In drilling engineering, cutting（Or scrape and cut）Broken rock is the common broken of the cutting tooth fractured rock on the rock crushing tools such as drill bit
Rock mode.Composite polycrystal-diamond is also known as PDC teeth（Polycrystalline Diamond Compact）Or PDC composite sheets
It is to scrape the ideal element for cutting through rock.PDC teeth are made of polycrystalline diamond layer and matrix two parts（Fig. 9）.PDC teeth use diamond
Micro mist is sintered under the conditions of high pressure high temperature with hard alloy substrate and formed.Diadust forms the polycrystalline diamond of PDC teeth
Layer, hard alloy substrate become the matrix of PDC teeth.PDC teeth had not only had high rigidity, the high-wearing feature of diamond, but also had hard
The intensity and toughness of alloy, are the ideal materials for manufacturing cutting tool, drilling bit and other wear resistant tools.PDC teeth
It is suitable for working in a manner of scraping and cut, since the hardness and wearability of the polycrystalline diamond layer of PDC teeth are significantly larger than hard alloy
The matrix of material, therefore PDC teeth have self-sharpening when scraping cut and making, i.e. the rate of wear of polycrystalline diamond layer is considerably slower than base
Body, makes the cutting edge of PDC teeth（Hard and wear-resisting diamond layer）Remain sharp keen state.
When PDC teeth are scraped cut and made, serve and main scrape that cut is polycrystalline diamond layer.The polycrystalline diamond layer of PDC teeth is hard
And it is crisp, matrix is relatively soft but has good toughness, therefore PDC teeth are scraped when cut is made has directionality, can only be poly-
Diamond layer after scrape cutting in preceding matrix（Such as Figure 10）, i.e. matrix is in the rear portion of polycrystalline diamond layer and pushes away to hold and support
Polycrystalline diamond layer.If the counter motion during the work time of PDC teeth, matrix after scrape cutting in preceding polycrystalline diamond layer,
Polycrystalline diamond layer is directly subject to opposition, it is easy to causes bursting apart or coming off for polycrystalline diamond layer, seriously reduces PDC
The working life of tooth, or even make the damage failure of PDC teeth within the extremely short time.
Alternatively, rotary teeth is arranged on drilling tool or rock crushing tool, and rotary teeth passes through rotating seat and drilling tool
Or rock crushing tool forms rotation connection, rotary teeth can be rotated relative to drilling tool or rock crushing tool.
Alternatively, the rock crushing tool is drill bit, and rotary teeth is arranged on the cutting structure of drill bit, and rotary teeth passes through rotation
The cutting structure of swivel base and drill bit forms rotation connection, and the cutting structure that rotary teeth can be on drill bit rotates.
This patent is compared with the beneficial effect of the prior art：
1st, during this patent rotary teeth contact rock and rock interaction broken rock, no matter cutting tooth and beginning during rock contact
State is how, when cutting tooth contact rock be subject to the active force of rock when, due to the cutting element of rotary teeth preceding cutting face or
The geometric center in the preceding cutting face of the cutting element of rotary teeth rotates against the rotational axis offset of the rotating seat of tooth, and rotary teeth
Cutting element rear cutting face the rear cutting face of the cutting element of offset side's homonymy or rotary teeth geometric center inclined
Shifting side's homonymy.Rotary teeth can be rotated relative to drilling tool or rock crushing tool, and under the action of rock counter-force, rotary teeth can rotate
To tooth cutting element preceding cutting face preceding, rock was cut scraping later in the back side in the preceding cutting face of cutting element.And cut scraping
In rock break-off process, no matter how drilling tool or rock crushing tool rotate or how opposite rock moves, and rotary teeth can be to cut
The preceding cutting face of element is cut in preceding, the next opposite rock movement in the posterior orientation in the back side in preceding cutting face（Scrape and cut）Broken rock.Rotary teeth
On cutting element rotate against the rotational axis offset of tooth, under the effect of external force, along the plane perpendicular to rotation axis
Power（Component）Rotary teeth will be promoted to rotate about axis rotation, make the normal in the preceding cutting face of cutting element of rotary teeth along fortune
It is dynamic（Scrape and cut）Broken rock is cut in direction, and the preceding cutting face normal direction of cutting tooth is directed toward movement all the time（Scrape and cut）Direction.This patent biases
Rotary teeth have orientation self-regulation adaptation function, make the cutting element on rotary teeth all the time before cutting face cut preceding, preceding
The posterior orientation in the back side of bevel is moved（Scrape and cut）Broken rock.In this way, the strong diamond class of wearability can be just used on this patent
Cutting tooth, particularly can scrape the PDC teeth of butt formula broken rock using being particularly well suited for.Organization plan is Buddha's warrior attendant used by this patent
Stone class cutting tooth, particularly PDC teeth are applied provides condition on drilling tool or rock crushing tool.
2nd, the cutting element biasing of this patent rotary teeth, rotary teeth are moved with stable section of scraping with respect to rock all the time（Scrape
Cut）Work.No matter how drilling tool or rock crushing tool move, and no matter move how complicated operating mode is, and rotary teeth can be with set
Direction and orientation with respect to rock move（Scrape and cut）Broken rock, therefore this patent can improve drilling tool or the drilling well of rock crushing tool is broken
Rock efficiency, and cutting tooth and the service life of instrument can be extended.
Alternatively, rotary teeth is arranged on the on-fixed cutting structure on drill bit.It such as may be provided at the tooth of rock bit
On wheel（Such as single-cone rotary drill bit）Or on the gear wheel cutting structure of composite drill bit.
3rd, when the use of this patent rotary teeth is when on gear wheel, rotary teeth can be rotated relative to gear wheel and the cutting element of rotary teeth
Biasing, rotary teeth scrape cut work with stable section of scraping with respect to rock all the time.No matter how bit cone rotates, gear wheel and thereon
Rotary teeth position how, cut the direction of motion regardless of scraping for cutting tooth on gear wheel and change, the rotary teeth on gear wheel is all the time
It can be scraped with its preceding cutting face in the posterior orientation in the back side in preceding, preceding cutting face and cut rock, rotary teeth is made with respect to the cut of scraping of rock
Direction is constant all the time, this is conducive to the abrasion for slowing down cutting tooth.Cutting tooth scrapes that to cut frictional direction constant with respect to rock all the time, compared with
Scrape butt to continually changing working method with respect to rock during cutting tooth work on conventional roller cone, though this patent using with
The consistent cutting tooth of the prior art（Such as hard-metal insert）, the abrasion of its cutting tooth and abrasion passivation speed will be got well.
4th, when the use of this patent rotary teeth is when on gear wheel, the cutting element on rotary teeth can use wearability strong and extremely fit
Close to scrape the PDC teeth of butt formula broken rock, PDC teeth are when scraping cut and making with good self-sharpening, the abrasion of polycrystalline diamond layer
Speed is considerably slower than matrix.Cutting tooth on conventional roller cone is in the drill bit broken rock course of work, and cutting tooth is with respect between rock
Butt is scraped to constantly changing, the hard-metal insert on gear wheel can be ground to tooth top corner angle during continually changing scraping butt
Round blunt, scrapes and cuts efficiency reduction.PDC teeth are used on rotary teeth, no matter how gear wheel rotates, and how is the orientation of cutting tooth, rotation
PDC teeth on tooth can be scraped with polycrystalline diamond layer in the posterior operating configurations of preceding matrix all the time cuts rock, and PDC teeth are with respect to rock
Butt is scraped to remaining constant, PDC teeth are scraped with normal direction cut through rock all the time, it, which is conducive to PDC teeth, scrapes and cut through rock advantage
Give full play to, the wearability of PDC teeth can be made full use of and from sharp characteristic.PDC tooth relative harder carbide buttons are easier to intrusive rock
Stone, be easier to scrape and cut through rock.Therefore, while drilling life of bit can be significantly improved using rotary teeth on gear wheel, drill bit is improved
Cutting tooth scrapes the efficiency of breaking rock for cutting efficiency and drill bit.
Alternatively, the preceding cutting face of the cutting element of rotary teeth is towards its rotation axis.As further selection, rotation
The normal of the mistake geometric center in the preceding cutting face of the cutting element of tooth rotates axis and intersects.
Alternatively, the cutting element on rotary teeth is selected from composite polycrystal-diamond（PDC teeth）, polycrystalline diamond it is compound
Tooth, thermally stable polycrystalline diamond composite teeth, impregnated diamond tooth（Block）, cubic boron, ceramic tooth or polycrystalline diamond with it is pregnant
One or more in the composite teeth that the hard rock that is inlaid with gold mutually is combined, and cutting element is composite polycrystal-diamond, glomerocryst gold
During the composite teeth that hard rock composite teeth or polycrystalline diamond are mutually combined with impregnated diamond, the glomerocryst Buddha's warrior attendant of its cutting element
The front end face of rock layers is preceding cutting face.In the program, since this patent uses the structure of rotary teeth, the cutting element on rotary teeth
Cut can be scraped with respect to rock to make, therefore can be used wearability is preferably above-mentioned to cut on the rotary teeth of this patent with stable direction
Element is cut, to improve the service life and efficiency of breaking rock of Cutter and whole drill bit.
Alternatively, rotary teeth is arranged on the stationary cutting structure on drill bit.In the program, when drill bit creeps into complexity
（Such as compound drilling, occur lateral vibration, be shimmy）When, cutting tooth complicated movement, cutting tooth with respect to rock scrape cut direction change compared with
Big and change is frequent.Rotary teeth is applied on the stationary cutting structure of drill bit, and can improve cutting tooth scrapes butt to adaptability, carries
High cutting tooth service life, and then improve the service life of drill bit.Further, rotary teeth be arranged on drill bit footpath inside three/
On one center portion region.Lateral vibration occurs in bit drilling process when compound movement, the cutting tooth of drill bit center portion is cut because scraping
Premature failure frequently easily occurs for direction change, and rotary teeth is set on the center portion region in drill bit footpath inside 1/3rd, can strengthen
Drill bit center portion cutting tooth scrapes butt to adaptability, improves drilling life of bit.Further, close to the rotation of drill bit center portion
The rotation axis of the rotating seat of tooth and drill axis are misaligned.
Alternatively, the geometric center in the preceding cutting face of the cutting element of rotary teeth or the preceding cutting face of cutting element is opposite
The offset distance of the rotation axis of rotary teeth is more than 1/8th of the rotation axis radius of rotary teeth, less than the two of rotation axis radius
Times.In the program, smoothly to be rotated when rotary teeth and rock interaction is worked to correctly scraping butt to and keeping good
Scrape butt position and direction, the geometric center in the preceding cutting face of the cutting element of rotary teeth or the preceding cutting face of cutting element is opposite
The offset distance of the rotation axis of rotary teeth cannot be too small, and offset distance is more big more is easy to the smooth rotation of rotary teeth, drives rotary teeth
The driving force for rotating to normal orientation and direction also will be more sufficient, also more be easy to ensure that rotary teeth keeps good and scrapes butt position and side
To.But offset distance can not be too big, and too big offset distance will make rotary teeth occupy larger revolution space, cause cloth tooth space
Waste.As further selection, the geometric center in the preceding cutting face of the cutting element of rotary teeth or the preceding cutting face of cutting element
The offset distance of the rotation axis of tooth is rotated against between 1~32mm.
Alternatively, the cutting element on rotary teeth is 1-6.In the program, the cutting element on rotary teeth can be 1
It is a, or it is multiple, it can be cut according to the actual size of tool sizes, rotary teeth size and cutting element to set on rotary teeth
Cut the quantity of element.As further selection, the cutting element on rotary teeth is 1,2 or 3.
Alternatively, restricted rotary teeth is set to rotate between the rotating seat and drilling tool or rock crushing tool of rotary teeth
The locking mechanism of movement on axis direction.When rotary teeth is arranged on instrument, to prevent direction of the rotary teeth along rotation axis
Play comes off along axis, and locking mechanism can be set between rotary teeth and instrument, strengthens the reliability and security of rotary teeth.
Here locking refers to rotary teeth is spacing along the direction of rotation axis, prevents rotary teeth along the direction play of rotation axis or de-
Fall, be not intended to limit the rotation of rotary teeth opposite tool.
As further selection, locked between the rotating seat and drilling tool or rock crushing tool of rotary teeth using ball.Rolling
Pearl locking can reduce to the greatest extent influence rotary teeth rotary motion while, can realize by rotary teeth along its rotation axis direction it is spacing with
Axial locking, and it is easy to process.
Alternatively, it is provided with sealing structure between the rotating seat and drilling tool or rock crushing tool of rotary teeth.The program
In, when bit operation, is in the environment such as drilling fluid, landwaste, rotary teeth can opposite tool rotation, to prevent other materials from entering
Between rotary teeth and the revolute of instrument, sealing structure can be set between rotary teeth and instrument, to reduce the abrasion of revolute,
Extend the service life of revolute.
The foregoing main solution of the present invention and further alternatives thereof can be freely combined to form multiple schemes, be this
The scheme that invention can be used and is claimed；And the present invention,（Each non conflicting selection）Between selection and between other selections
It can also be freely combined.Those skilled in the art can understand have after the present invention program is understood according to the prior art and common knowledge
Multiple combinations, are the claimed technical solution of the present invention, do not do exhaustion herein.
Brief description of the drawings
Fig. 1 is that the rotation axis of the rotary teeth of the embodiment of the present invention 1 is to set the structure diagram of stepped axle journal shape.
Fig. 2 is the structure diagram that the rotation axis of the rotary teeth of the embodiment of the present invention 1 is cylinder.
Fig. 3 scrapes schematic diagram when cutting through rock for the rotary teeth of the embodiment of the present invention 1.
Fig. 4 is the structure diagram that the cutting element on the rotary teeth of the embodiment of the present invention 1 is 2.
Fig. 5, Fig. 6 are the knot that the rotary teeth of the embodiment of the present invention 2 is arranged on the gear wheel on-fixed cutting structure on drill bit
Structure schematic diagram.
Fig. 7 is the structure diagram that the rotary teeth of the embodiment of the present invention 2 is arranged on the stationary cutting structure on drill bit.
Fig. 8 is to be provided with locking between the rotary teeth and drilling tool or rock crushing tool of the embodiment of the present invention 3, embodiment 4
The schematic diagram of structure and sealing structure.
Fig. 9 is routine PDC toothing schematic diagrames.
Figure 10 normally scrapes schematic diagram when cutting through rock for routine PDC teeth.
Figure 11, Figure 12, Figure 13 are that the shape of the cutting element on the rotary teeth of the embodiment of the present invention 1 is respectively semicolumn
Shape, wedge shape and vertically arranged cylindrical structure diagram.
In figure：1st, cutting element, 11, the preceding cutting face of rotary teeth, 12, the rear cutting face of rotary teeth, 13, PDC teeth it is poly-
Diamond layer, 14, PDC tooth matrixes, 15, the back side in the preceding cutting face of rotary teeth, 2, rotating seat, 21, the rotation axis of rotary teeth
Line, 22, the rotation axis of rotary teeth, 3, rotary teeth, 4, drilling tool or rock crushing tool, 41, gear wheel, 5, rock, 6, sealing structure,
7th, locking mechanism.
Embodiment
Following non-limiting examples are used to illustrate the present invention.
Embodiment 1：
With reference to shown in figure 1-6, a kind of rotary teeth, including cutting element 1 and rotating seat 2, before the cutting element 1 of rotary teeth
The geometric center in the preceding cutting face 11 of the cutting element 1 of cutting face 11 or rotary teeth rotates against the rotation axis of the rotating seat 2 of tooth
Line 21 deviates, and the geometric center O in the rear cutting face 12 of the cutting element 1 of rotary teeth or the rear cutting face 12 of cutting element 1 exists
Offset side's homonymy.Alternatively, the cutting element 1 on rotary teeth is composite polycrystal-diamond（PDC teeth）, polycrystalline diamond it is multiple
Close tooth, thermally stable polycrystalline diamond composite teeth, impregnated diamond tooth（Block）, cubic boron, ceramic tooth or polycrystalline diamond with
Composite teeth that impregnated diamond is mutually combined etc..As further selection, the cutting element 1 on rotary teeth is polycrystalline diamond
Composite sheet（PDC teeth）.Composite polycrystal-diamond is made of polycrystalline diamond layer 13 and 14 two parts of matrix（Referring to Fig. 9）, its
The front end face of middle polycrystalline diamond layer 13 is the preceding cutting face 11 of cutting element 1, and side is rear cutting face 15（With reference to figure 3）.
Alternatively, the shape of the cutting element 1 on rotary teeth is semi-cylindrical（With reference to figure 11）, wedge shape（With reference to figure 12）Or vertically set
The cylinder put（With reference to figure 13）Deng.Alternatively, before the preceding cutting face 11 of the cutting element 1 of rotary teeth or cutting element 1
The geometric center O in cutting face 11 rotates against rotation axis 22 radiuses of the offset distance S more than rotary teeth of the rotation axis 21 of tooth（Rotation
The cylinder of shaft 22 or the radius of necked part）1/8th, less than twice of 22 radius of rotation axis（With reference to figure 3, Fig. 8）.
As further selection, the geometric center in the preceding cutting face 11 of the cutting element 1 of rotary teeth or the preceding cutting face 11 of cutting element 1
The offset distance S of the rotation axis 21 of tooth is rotated against between 1~32mm.Cutting element 1 on rotary teeth can be 1,
Can be multiple.Alternatively, the cutting element 1 on rotary teeth is 1-6.Selected as further, the cutting on rotary teeth
Element 1 is 1（As shown in Figure 1, Figure 2）, 2（Such as Fig. 4）Or 3.When cutting unit is 1, the preferred preceding cutting face of cutting unit
The normal of mistake geometric center to rotate axis 21 intersecting.When cutting unit is multiple, the preceding cutting face 33 of each cutting unit
Side by side towards rotation axis 21, and it is uniformly distributed to rotate against axis 21 or so.Alternatively, as shown in figure 3, rotary teeth 3 is arranged on
On drilling tool or rock crushing tool 4, the rotating seat 2 of receiving matching rotation tooth 3 is correspondingly provided with drilling tool or rock crushing tool 4
Hole, rotating seat 2 inserts in the hole to be rotated on drilling tool or rock crushing tool 4.Rotating seat 2 can have diversified forms, such as Fig. 1 is
For the rotating seat 2 of rotary teeth 3 to set stepped axle journal shape, Fig. 2,4 be that the rotating seat 2 of rotary teeth 3 is cylindrical.Cutting element
The top surface of rotating seat 2 is consolidated in, its front end face（The front end face of wearing layer）Have angle with the top surface of rotating seat 2, cutting element
There can also be various ways with the consolidation form of rotating seat 2：Such as Fig. 1, shown in 2, its part of matrix and wearing layer side are absorbed in
It is fixed in top surface, or as shown in figure 4, forming a boss in top surface, its body portion side, which is absorbed in, to be fixed in boss,
And wearing layer then exposure in outside boss.
Embodiment 2：
The present embodiment is substantially the same manner as Example 1, its difference lies in：The drilling tool or rock crushing tool 4 are drill bit, rotation
Turn tooth 3 to be arranged on the cutting structure of drill bit, rotary teeth 3 is formed by the cutting structure of rotating seat 2 and drill bit and is rotatablely connected, rotation
Turn the cutting structure rotation that tooth 3 can be on drill bit.Alternatively, rotary teeth 3 is arranged on the on-fixed cutting structure on drill bit
On, such as it is arranged on the gear wheel 41 of rock bit（Such as Fig. 5）Or on the gear wheel cutting structure of composite drill bit（Such as Fig. 6）.As choosing
Select, rotary teeth 3 is arranged on the stationary cutting structure on drill bit 4（Such as Fig. 7）.Further, rotary teeth 3 is arranged on drill bit radially
On interior 1/3rd center portion region.Further, the rotation axis and brill of the rotating seat of the rotary teeth of close drill bit center portion
Head axis is misaligned.
Embodiment 3：
Refering to what is shown in Fig. 8, the present embodiment is substantially the same manner as Example 1, its difference lies in：Rotary teeth 3 and drilling tool or
The locking mechanism 7 of movement of the restricted rotary teeth 3 on 21 direction of rotation axis is set between rock crushing tool 4.Rotary teeth 3 is with boring
Elastic collar structure can be set between well instrument or rock crushing tool 4, to prevent rotary teeth 3 along the direction play of rotation axis 21 or
Come off along axis, structure can be threaded between rotary teeth 3 and drilling tool or rock crushing tool 4, limited rotary teeth 3 by nut
Position prevents rotary teeth 3 along the direction play of rotation axis 21 or comes off in the rotation perforation of drilling tool or rock crushing tool 4.
As further selection, locked between rotary teeth 3 and drilling tool or rock crushing tool 4 using ball（Such as Fig. 8）.
Embodiment 4：
Refering to what is shown in Fig. 8, the present embodiment is substantially the same manner as Example 1, its difference lies in：The rotating seat 2 of rotary teeth 3 is with boring
Sealing structure 6 is provided between well instrument or rock crushing tool 4.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of rotary teeth, including cutting element and rotating seat, it is characterised in that：The preceding cutting face of the cutting element of rotary teeth or
The geometric center in the preceding cutting face of cutting element rotates against the rotational axis offset of the rotating seat of tooth, and the cutting member of rotary teeth
The geometric center in the rear cutting face of part or the rear cutting face of cutting element preceding cutting face offset side's homonymy, before cutting element
Rotation axis of the relatively rear cutting face in cutting face close to rotating seat.
2. rotary teeth according to claim 1, it is characterised in that：Rotary teeth is arranged on drilling tool or rock crushing tool,
Rotary teeth is formed by rotating seat and drilling tool or rock crushing tool and is rotatablely connected, and rotary teeth can opposite drilling tool or broken rock work
Tool rotates.
3. rotary teeth according to claim 2, it is characterised in that：The rock crushing tool is drill bit, and rotary teeth is arranged on brill
On the cutting structure of head, rotary teeth is formed by the cutting structure of rotating seat and drill bit and is rotatablely connected, and rotary teeth can opposite drill bit
On cutting structure rotate.
4. rotary teeth according to claim 3, it is characterised in that：Rotary teeth is arranged on the on-fixed cutting structure on drill bit
On upper or stationary cutting structure.
5. rotary teeth according to claim 1, it is characterised in that：Geometry is crossed in the preceding cutting face of the cutting element of rotary teeth
The normal at center rotates the jante et perpendiculaire of seat.
6. rotary teeth according to claim 1, it is characterised in that：The preceding cutting face of the cutting element of rotary teeth or cutting member
The geometric center in the preceding cutting face of part rotates against eight of offset distance more than the rotation axis radius of rotary teeth of the rotation axis of tooth
/ mono-, less than twice of rotation axis radius.
7. the rotary teeth according to claim 1 or 6, it is characterised in that：The preceding cutting face of the cutting element of rotary teeth is cut
Cut the preceding cutting face of element geometric center rotate against tooth rotation axis offset distance between 1~32mm.
8. rotary teeth according to claim 1, it is characterised in that：Cutting element on rotary teeth is 1-6.
9. rotary teeth according to claim 2, it is characterised in that：The rotating seat of rotary teeth and drilling tool or rock crushing tool
Between the locking mechanism of movement of the restricted rotary teeth on rotation axis direction is set.
10. rotary teeth according to claim 2, it is characterised in that：The rotating seat of rotary teeth and drilling tool or broken rock work
Sealing structure is provided between tool.
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| CN201611049889.8A CN106382098B (en) | 2016-11-25 | 2016-11-25 | A kind of rotary teeth |
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| CN201611049889.8A CN106382098B (en) | 2016-11-25 | 2016-11-25 | A kind of rotary teeth |
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| CN106382098A CN106382098A (en) | 2017-02-08 |
| CN106382098B true CN106382098B (en) | 2018-05-15 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106639887B (en) * | 2016-11-25 | 2018-09-14 | 西南石油大学 | Rotary teeth single-cone rotary drill bit |
| CN113405895B (en) * | 2021-05-31 | 2022-11-04 | 西南石油大学 | A anchor clamps for scraping cut and strike compound broken rock test |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3847236A (en) * | 1973-06-28 | 1974-11-12 | J Coalson | Drill bit |
| US4320808A (en) * | 1980-06-24 | 1982-03-23 | Garrett Wylie P | Rotary drill bit |
| US5180022A (en) * | 1991-05-23 | 1993-01-19 | Brady William J | Rotary mining tools |
| CN103556952A (en) * | 2013-11-15 | 2014-02-05 | 成都百施特金刚石钻头有限公司 | Rotary-tooth drilling bit |
| CN203729882U (en) * | 2014-01-07 | 2014-07-23 | 成都百施特金刚石钻头有限公司 | Cutting tooth self-rotating type drill bit |
| CN205445474U (en) * | 2015-12-28 | 2016-08-10 | 中国石油天然气股份有限公司 | PDC (polycrystalline diamond compact) drilling bit |
| CN206174875U (en) * | 2016-11-25 | 2017-05-17 | 西南石油大学 | Rotary teeth |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MX168958B (en) * | 1988-07-19 | 1993-06-15 | Smith International | CONVEX CUTTING INSERTS, IN POLYCRYSTALLINE DIAMOND |
-
2016
- 2016-11-25 CN CN201611049889.8A patent/CN106382098B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3847236A (en) * | 1973-06-28 | 1974-11-12 | J Coalson | Drill bit |
| US4320808A (en) * | 1980-06-24 | 1982-03-23 | Garrett Wylie P | Rotary drill bit |
| US5180022A (en) * | 1991-05-23 | 1993-01-19 | Brady William J | Rotary mining tools |
| CN103556952A (en) * | 2013-11-15 | 2014-02-05 | 成都百施特金刚石钻头有限公司 | Rotary-tooth drilling bit |
| CN203729882U (en) * | 2014-01-07 | 2014-07-23 | 成都百施特金刚石钻头有限公司 | Cutting tooth self-rotating type drill bit |
| CN205445474U (en) * | 2015-12-28 | 2016-08-10 | 中国石油天然气股份有限公司 | PDC (polycrystalline diamond compact) drilling bit |
| CN206174875U (en) * | 2016-11-25 | 2017-05-17 | 西南石油大学 | Rotary teeth |
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|---|---|
| CN106382098A (en) | 2017-02-08 |
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